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Atomization and Sprays

年間 12 号発行

ISSN 印刷: 1044-5110

ISSN オンライン: 1936-2684

The Impact Factor measures the average number of citations received in a particular year by papers published in the journal during the two preceding years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) IF: 1.2 To calculate the five year Impact Factor, citations are counted in 2017 to the previous five years and divided by the source items published in the previous five years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) 5-Year IF: 1.8 The Immediacy Index is the average number of times an article is cited in the year it is published. The journal Immediacy Index indicates how quickly articles in a journal are cited. Immediacy Index: 0.3 The Eigenfactor score, developed by Jevin West and Carl Bergstrom at the University of Washington, is a rating of the total importance of a scientific journal. Journals are rated according to the number of incoming citations, with citations from highly ranked journals weighted to make a larger contribution to the eigenfactor than those from poorly ranked journals. Eigenfactor: 0.00095 The Journal Citation Indicator (JCI) is a single measurement of the field-normalized citation impact of journals in the Web of Science Core Collection across disciplines. The key words here are that the metric is normalized and cross-disciplinary. JCI: 0.28 SJR: 0.341 SNIP: 0.536 CiteScore™:: 1.9 H-Index: 57

Indexed in

EXPERIMENTAL AND NUMERICAL STUDY OF BUBBLE GROWTH PROCESS WITHIN A SUPERHEATED WATER DROPLET

巻 27, 発行 9, 2017, pp. 807-819
DOI: 10.1615/AtomizSpr.2017020148
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要約

This paper reports an experimental and numerical study of bubble growth process within a water droplet due to depressurization. During the experiment, a distilled water droplet was suspended on a thermocouple, which was also used to measure the droplet temperature. A high-speed camera was applied to record the bubble expansion. A mathematical model was developed based on the momentum equation of bubble growth coupling with the energy conservation equation. The heat transfer due to flash evaporation was considered at the droplet surface. The mechanical nonequilibrium on the formation of bubble nucleus was also introduced. Especially, this model considered the influence of thermocouple on bubble growth. The model predictions agree well with the experimental data, demonstrating the soundness of the present model. Through the numerical calculations, the main factors affecting the bubble growth were analyzed. The results show that the main influences on bubble growth include pressure difference, surface tension, and friction resistance between the droplet and the thermocouple. The existence of thermocouple slows down the bubble growth, and its effect is controlled by the competition between the increase of liquid velocity and the reduction of contact area.

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